Congratulations on your new -6!
You will not receive a consensus on "which autopilot to buy". This is like asking "Which car should I buy?"
Fortunately, all the digital autopilots on the market today (Tru-Trak, Trio, Dynon, etc) work very nicely, it is a mature technology. It is just a matter of selecting the features you want and how you want it to integrate with the other devices in your present or future panel.
Enjoy your new autopilot!